John lines



(No Model.)

J. LINES.

v NIPPLE FOR HOT WATER BAGS. No. 589,734. Patented Sept. 7,1897.

UNITE STATES PATENT ilrricn.

JOHN LINES, OF IVATERBURY, CONNECTICUT, ASSIGNOR TO THE SGOVILLMANUFACTURING COMPANY, OF SAME PLACE.

NIPPLE FOR HOT=WATER BAGS.

SPECIFICATION forming part of Letters Patent No. 589,734, datedSeptember '7, 189').

Application filed July 20, 1896- $eria1llo. 599,812, (No model) To aZZwhom it may cancer/t:

Be it known that I, JOHN LINES, of Waterbury, in the county of New Havenand State of Connecticut, have invented a new Im- 5 provenient inNipples for IIot-ll aterBottles 5 and I do hereby declare the following,when taken in connection with the accompanying drawings and the lettersof reference marked thereon, to be a full, clear, and exact descriptionof the same, and which said drawings constitute part of thisspecification, and rep resent, in

Figure 1, a perspective view of a nipple constructed in accordance withmy invention; [5 Fig. 2, a view thereof in central longitudinal section5 Fig. 3, an enlarged reverse plan view thereof; and Fig. 4, a greatlyenlarged broken view in side elevation, showing a portion ofthe-exterior surface of the nipple.

My invention relates to an improvement in nipples for the reception ofthe plugs or stoppers of hot-water bags and kindred vessels, the objectbeing to produce at a low cost for manufacture a durable and effectivenipple.

IVith these ends in view my invention consists in a sheet-metal nippleconstructed at its outer end with an outwardly-turned flange, having aspiral thread rolled into it, and having its threaded outer surfaceroughened, for 0 the better securing of it in place, by means of notchesformed in the screw-threads and extending in line with the longitudinalaxis of the nipple.

In carrying out my invention I form the nipple by subjecting a suitableblank to the required operations, its upper end having anoutwardly-turned annular-flange A, and its body A" having screw-threadsA rolled into it to adapt it to receive a plug or stopper, which may beof any approved construction and which is externally threaded to takeinto the internal threads of the nipple. B y rolling a thread into thenipple its outer surface is threaded as well as its innersurface, andfor increasing the roughness of its outer surface the high points orcrowning edges of the threads are formed with notches B, located in linewith the longitudinal axis of the hip ple and substantially at a rightangle to the threads A thereof, the notches being arranged in verticallines, so to speak, and formed by subjecting the threaded nipple to theaction of a die. The particular form and number of these notches may bevaried, as desired, though they should not in any case 5 5 cut throughthe metal from which the nipple is formed.

I am aware that it is not new to roughen the exterior surface of astopper or nipple for the purpose of assisting in its retention inplace, and do not claim that idea broadly.

I am also aware that a nipple having internal and external threads isold.

Having fully described my invention, what I claim as new, and desire tosecure by Letters Patent, is-- A shect-xnetal nipple forinsertion intohotwater bags for the reception of plugs or stoppers therefor, the saidnipple being formed from a single piece of sheet metal, furnished at itsouter end with an outwardly-turned flange, and having a spiral threadproduced in its body portion so as to form internal screw-threads forengagement by the threads of a plug or stopper, and so as to formexternal screw-threadsby which the nipple is fastened in place withinthe mouth of the bag, the high points or crowning edges of said externalthreads having formed in them vertically arranged, crosssectionallywedgeshaped notches, provided for increasing the grip between the nippleand the mouth of the bag, arranged in a series of lines at equaldistances apart, extending parallel with the longitudinal axis of thenipple, and formed by subjecting the nipple to the action of a die whichproduces the notches without cutting through the metal, substantially asdescribed.

In testimony whereof I have signed this go specification in the presenceof two subscribing witnesses.

JOHN LINES.

lVitncsses:

M. J. WARNER, Geo. F. Honors.

